public function testBeforeSave()
{
$request = new ContactRequest();
$this->assertNull($request->getCreatedAt());
$this->assertNull($request->getUpdatedAt());
$request->prePersist();
$this->assertNotNull($request->getCreatedAt());
$this->assertInstanceOf('DateTime', $request->getCreatedAt());
$this->assertNotNull($request->getUpdatedAt());
$this->assertInstanceOf('DateTime', $request->getUpdatedAt());
$this->assertSame($request->getCreatedAt(), $request->getUpdatedAt());
}
